National Weather Service United States Department of Commerce

 

 
CHICAGO NORMALS (1991-2020)
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

 

May Normals for Chicago for Temperature and Precipitation

 

Day of Month High Low Average HDD CDD Precipitation
1 65.1 45.6 55.4 10.2 0.6 0.15
2 65.5 46 55.7 9.9 0.6 0.14
3 65.9 46.3 56.1 9.6 0.7 0.15
4 66.2 46.7 56.4 9.3 0.7 0.15
5 66.6 47 56.8 9 0.8 0.14
6 67 47.3 57.2 8.7 0.9 0.14
7 67.3 47.7 57.5 8.5 1 0.15
8 67.7 48 57.8 8.2 1 0.15
9 68.1 48.3 58.2 7.9 1.1 0.15
10 68.4 48.6 58.5 7.7 1.2 0.15
11 68.8 49 58.9 7.4 1.3 0.15
12 69.1 49.3 59.2 7.1 1.4 0.15
13 69.5 49.6 59.6 6.9 1.5 0.16
14 69.9 49.9 59.9 6.7 1.6 0.15
15 70.2 50.3 60.2 6.4 1.7 0.14
16 70.6 50.6 60.6 6.2 1.8 0.15
17 70.9 50.9 60.9 6 1.9 0.15
18 71.2 51.2 61.2 5.8 2 0.14
19 71.6 51.6 61.6 5.6 2.2 0.15
20 71.9 51.9 61.9 5.4 2.3 0.15
21 72.3 52.2 62.3 5.2 2.4 0.15
22 72.6 52.5 62.6 5 2.6 0.15
23 73 52.9 62.9 4.8 2.7 0.14
24 73.3 53.2 63.3 4.6 2.8 0.14
25 73.7 53.5 63.6 4.4 3 0.14
26 74 53.9 63.9 4.1 3.1 0.13
27 74.3 54.2 64.3 3.9 3.2 0.14
28 74.7 54.6 64.6 3.7 3.3 0.14
29 75 54.9 65 3.5 3.5 0.13
30 75.4 55.2 65.3 3.3 3.6 0.13
31 75.7 55.6 65.6 3.1 3.8 0.14
             
MONTH 70.5 50.6 60.6 198.1 60.3 4.49